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package engine.db;

//STEP 1. Import required packages
import java.sql.*;

/**
 *
 * @author LUSHINI
 */
public class FirstExample {
    
    // JDBC driver name and database URL
   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";  
   static final String DB_URL = "jdbc:mysql://localhost/PMS_DB";
   

   //  Database credentials
   static final String USER = "root";
   static final String PASS = "";
   //private static String userName;
   //private static String passWord;
   
   public static void main(String[] args) {
   Connection conn = null;
   Statement stmt = null;
   try{
      
      //STEP 2: Register JDBC driver
      Class.forName("com.mysql.jdbc.Driver");

      //STEP 3: Open a connection
      System.out.println("Connecting to database...");
      conn = DriverManager.getConnection(DB_URL,USER,PASS);

      //STEP 4: Execute a query
      System.out.println("Creating statement...");
      stmt = conn.createStatement();
      String sql;
      sql = "SELECT userName, passWord FROM user_details";
       //sql = "SELECT userName, passWord FROM user_details WHERE userName =  " + userName + " AND passWord = " + passWord + " ";
      ResultSet rs = stmt.executeQuery(sql);

      //STEP 5: Extract data from result set
      while(rs.next()){
         //Retrieve by column name
         //int id  = rs.getInt("id");
         //int age = rs.getInt("age");
         //String first = rs.getString("first");
         //String last = rs.getString("last");
          String userName = rs.getString("userName");
          String passWord = rs.getString("passWord");

         //Display values
         //System.out.print("ID: " + id);
         //System.out.print(", Age: " + age);
         //System.out.print(", First: " + first);
         //System.out.println(", Last: " + last);
          System.out.println("userName: " + userName);
          System.out.println("passWord: " + passWord);
      }
      //STEP 6: Clean-up environment
      rs.close();
      stmt.close();
      conn.close();
   }catch(SQLException se){
      //Handle errors for JDBC
      se.printStackTrace();
   }catch(Exception e){
      //Handle errors for Class.forName
      e.printStackTrace();
   }finally{
      //finally block used to close resources
      try{
         if(stmt!=null)
            stmt.close();
      }catch(SQLException se2){
      }// nothing we can do
      try{
         if(conn!=null)
            conn.close();
      }catch(SQLException se){
         se.printStackTrace();
      }//end finally try
   }//end try
   System.out.println("Goodbye!");
}//end main
}//end FirstExample
    

